Accounting machine



Aug 1, 19395 c L, L E 2,167,760

ACCOUNTING MACHINE Original Filed Oct. 14, 1935 7 sh et -Sheet 1Inventor O g; Charles L. Lee, Deceased \Q I m- By Leefe Jane LeeExecutrix L\ By Q 4 m *0 OvwZ/M 0 1 Her Attorney Aug. 1, 1939. c. L. LEE

ACCOUNTING MACHINE Original Filed Oct. 14, 1935 7 Sheets-Sheet 2Inventor Charles L. Lee, Decehsed By Leefe Jane Lee Execulrix HerAttomey Aug. 1, 1939. c. L. LEE 2,367,760

ACCOUNTING MACHINE Original Filed Oct. 14, 1935 '7 Sheets-Sheet 3inventor Charles L. Lee, Deceased By Leefe Jane Lee Execuh-ix QM M HerAttorney Aug. 1, 1939. L, LEE 2,167,760 i ACCOUNTING MACHINE FIG. 8

Inventor Charles L. Lee, Deceased By Leefe Jane Lee Executrix t I By 7;M M

Her Attorney C L. LEE

Aug. 1, 1939.

ACCOUNTING MACHINE Filed Oct. 14, 1935 7 Sheets-Sheet 5 Inventor CharlesL. Lee, Deceased By Leefe Jane Lee Executrix Her Attorney Aug. 1, 1939.c. L. LEE

ACCOUNTING MACHINE '7 Sheets-Sheet 6 Original Filed Oct. 14, 1935 Q 5 w@mm m g B m 0U o. O 0 NE a 5 S Q 6% m m o m I 0 1 0 S N wmw 8w 1 o w o 0c O H O Q 5 a v Invenfioz- Charies L. Lee, Deceased By Leefe Jane LeeExecutrix By @Mm Her Attorney Aug. 1, 1939. C LEE ACCOUNTING MACHINEOriginal Filed Oct. 14, 1935 7 Sheets-Sheet 7 Inventor Charles L. Lee,Deceased By Leefe Jane Lee Execuh-ix Her Atmmey a hand lever whichoperated an oscillating drive Patented Aug. 1,1939

UNITED STATES PATENT OFFICE ACCOUNTING MACHINE Original applicationOctober 14, 1935,'Serial No. 44,838. Divided and this application July22,

1936, Serial No. 91,877

6 Claims.

This invention relates to bookkeeping or accounting machines and thelike, but more particularly to improvements in the operating andcontrolling mechanisms of machines of the type illustrated and describedin Letters Patent of the United States Nos. 1,197,276 and 1,197,278,issued September 5, 1916, to Halcolm Ellis and United States Patent No.1,819,084, issued August 18, 1913, to Emil John Ens. This case is adivision of applicant's pending application Serial No, 44,838 filedOctober 14, 1935.

Practically all the electrically operated adding and listing machines,commonly referred to as bookkeeping or accounting machines, of todayhave ev01ved from a hand-operated machine. Most of the earlier machineswere equipped with shaft which in turn actuated the mechanism of themachine. Later, these machines were equipped with electric motors whichoscillated the drive shaft in substantially the same manner as the handlever. In this transition the electric motors were merely added to thehand-operated machines and in most cases no attempt was -made tomodernize or improve the operating and actuating mechanismsof themachine.

The various advantages of the revolving drive shaft over the oscillatingdrive shaft will be refor their various functions.

A still further object of this invention is the provision of novel meansto control the machine releasing means in certain operations.

Another object is the provision of novel mechanism for controlling themachine releasing means during overdraft operations.

Another object of this invention is the novel mechanism for transposingcomplementary amounts to print the true negative total in a 1 machine ofthis type having a rotary drive shaft. With these and incidental objectsin view, the invention includes certain novel features of constructionand combination of parts, the essential elements of which are set forthin appended claims and a preferred form or embodiment of which ishereinafter described with reference to mechanism connected thereto.

Fig. 3 is a right side elevation of the machine releasing mechanism.

Fig. 4 is a fragmentary view of the machine clutch.

Fig. 5 is a detail view of the overdraft key and a part of itsassociated mechanism.

Fig. 6 is a fragmentary view of the right hand end of the rotary driveshaft.

Fig. 7 is a fragmentary view of the overdraft control cam cluster.

Fig. 8 is'a right side elevation of the overdraft key locking mechanism.

Fig. 9 is a detail view of a portionof the overdraft key lockingmechanism.

- Fig. 10 is a detail view of a portion of the r overdraft controlmechanism.

Fig. 11 is a right side view of the means for controlling the printingmechanism during overdraft operation.

Fig. 12 is a sectional view of the machine taken just to the right ofone of the rows of amount keys.

Fig. 13 is a detail view of the alining mechanism for the actuatorracks.

Fig. 14 is anend view of the overdraft storage differential.

.Fig. 15 is a detail view of the engaging mechanism for the overdraftdifferential.

Fig. 16 is a left side elevation of the machine showing in particularthe totalizer controlling and engaging mechanisms.

Fig. 17 is a detail of a portion of the key releasing mechanism.

Fig. 18 isa perspective view showing the totaliz er controllingmechanism and the machine releasing mechanism.

well known Ellis .type and, is equipped with a laterally shiftabletraveling carriage supporting a. platen roll adapted to present recordmaterial to the type carriers. Depending upon the use to which themachine is to be put, it may or may not be equipped with a typewriterkeyboard and type for the entering of various data upon the recordmaterial. The machine of the present invention is equipped with a rotarydrive shaft, which replaces the conventional oscillating drive shaftused heretofore in machines of this type. A constantly, running motor isop'eratively connected to the drive shaft by means of a clutch mechanismwhich is controlled by the usual releasing mechanism. In all operationsexcept overdraft operations, depressing the regular reactuated by aplurality of denominational reciprocating racks which are in turnpositioned in adding and subtracting operations under control of aplurality of amount keys arranged in denominational rows on thekeyboard. In totaltaking operations, thetotalizerwheels position theracks to record the amount on said totalizer wheels. There is a typecarrier for each denomination and they are positioned by the actuatorracks commensurate with the value of the depressed amount keys ortheamount on the totalizer wheels. l

The adding and subtracting functions of the present machine arecontrolled by the traveling carriage in tabulated positions thereof andthe other functions, including non-add, sub-total, total, repeat, andalso subtract, are governed'by a row of control keys located on the leftside of the keyboard. Other features of the instant machine will bedisclosed in the detailed description following.

DETAILED DESCRIPTION: Framework and operating mechanism a right frame 40(Figs. 1, 2, and 16) and a left frame 4|, secured to a machine. base 42,which also supports a suitable cabinet or case (not shown) whichencloses the mechanism of the machine. Mounted on the machine case is alaterally shiftable traveling carriage (not shown) similar to that usedon typewriters, supporting a platen roll 43 (Fig. 12) which carriesrecord material in proper relation to the type carriers, O of which, anamount segment 44,- is here shown. Secured to the base 42 is an electricmotor 45 (Figs. 1, 3, and 4) of the constantly running type, geared to aclutch driving member 46 adapted to be frictionally connected to aclutch driven member.41, both of said clutch members being rotafablysupported by a stud 48 secured in the motor Secured to a hub of theclutch driven'"' frame. member 41 is a gear 49 connected by anintermediate gear 50 loose on a stud 5| in the motor frame to a gear 52secured on'a main drive shaft 53. opposite ends of which are journaledin th frames 40 and 4|.

One end of a clutch band 54 (Fig. 3) is secured to the clutch drivenmember 41, while the other end thereof is connected to a bell crank- 55loo e on a stud 58in the member 41 and adjustably connected to an arm 51also loose on the stud 56.

The upper end of the arm 51 cooperates with a bentover ear 58 of a lever59 loose on a stud in the motor frame. An upward extension of the lever59 is connected by a link 6| to an arm 62 loose on an auxiliarydifferential engaging shaft 63 journaled in the frames 48 and 4!. Thearm 82 has a step 64 adapted to cooperate with a stud 65 in one arm of athree-armed lever 68 loose on a stud 61 in the frame 40. An upwardlyextending arm of the lever 66 is bifurcated to embrace a stud 68 in arelease plate 69 pivoted on a stud 18 in the frame 48. The plate 69 hasa stud 1| straddled.

by the bifurcated lower end of a stem 12 of a starting bar 13slidablysupported by an auxiliary keyboard plate 98. Another stem 14 ofthe bar 13 is loosely connected by a stud 15 to a rearwardly disposedarm of the lever 88. A spring 16 urges the plate 69 clockwise and thelever 66 counterclockwise to normally maintain the stud 65 in the pathof the step 64. Depressing the starting .bar' 13 rocks the plate 69counter-clockwise and the lever 66 clockwise to move the stud 65 out ofthe 'path of the step 64. This allows a torsion spring 11 (Fig. 3) torock the lever 59 counterclockwise to move the car 58 out of the path ofthe upper end of thearm 51. A spring 18 then.

urges the arm 51 and the crank 55 counter-clockwise to expand the band54, thereby causing it to rip the inner surface of the constantlyrevolving clutch driving member 46. a

In all machine operations except overdraft operations, the clutch drivenmember 41, the gear 52, and the main drive shaft 53 make onecounterclockwise revolution. Near the end of rotation of the shaft 53, astud 19 in the gear 58 engages an ear 80 of the lever 59 to rock saidlever clockwise. Consequent clockwise movement of the arm 82 moves thestep 64 beyond the stud 65, allowing the spring 16 to restore the lever66 to normal position, so that the stud 55 retains the plate 62 andlever 59 in untripped position. Returnmovement of the lever 59 moves theear 58 in the path of the arm 51, which, upon engagement therewith,disengages the .clutch driven member from the clutch driving member.

. Loose on a stud 8| (Fig. 1) in the motor frame is a return lever 82urged clockwise by a spring 83 tensioned between said lever and a study84. The upper end of the lever 82 has therein a camming notch, which, incooperation with a roller 85 carried by the gear 49, completes returnmovement of the machine operating mechanism to home position after theclutch is disengaged as related above. An extension 86 of the lever 82,in cooperation with the stud 84, limits clockwise movement of said leverwhen the roller 85 moves out of engagement therewith.

Referring to Fig. 3, a simple and efficient device is provided toprevent repeat operations of the machine in case the starting bar isretained depressed. This mechanism inc udes a non-repeat latch 81 looseon the shaft 61. Said latch 81 is urged clockwise and normallymaintained in contact with a stop stud 88 in the lever 65 by aspring 89.Clockwise releasing movement of the lever88 moves a hook 93 of the latch81 into the path of a similar hook 94 on the arm 82. In case thestarting bar 13 is'retained depressed during the restoration of the arm82, the hook 93 latches overthe hook 94 when hook 94 is restored bystu'd '19 engagingthe car 88, and prevents a repeat operation of themachine by retaining said arm 62 and the lever 59 in untripped position.As

' shaft 53 are companion cams and 31, the

peripheries of which are adapted to cooperate with rollers. (only oneshown) carried by a Y- shaped lever I loose on a stud in the frame 40.The lever I00 has a stud I02 which extends through a slot I03 in an.armI04 secured to a leading frame shaft I05 journaled in the frames 40 and4|. During each machine operation, the cams 96 and 91, by means of thelever I00, oscillate the arm I04 and the shaft I05 firstcounterclockwise and then back to normal position through an approximateangle of 40 degrees.

Shown in Fig. 11 is the means for operating the printer mechanism.Secured on the main drive shaft 53 are companion cams I00 and I01cooperating respectively with rollers I00 and I0! carried by a cam armIIO loose on the stud IOI. The arm III! has a stud III adapted tocooperate with a notch in a link I I2, the upper end of which isconnetced to an arm II3 resiliently connected by a spring I to an armII5 secured on a printer shaft IIO journaled in the frame 40 and in theprinter frame (not shown). The notch in the link H2 is constantlyengaged with the stud I I I except in overdraft operations, and themannor in which said link II2 functions in overdraft operations will bedescribed later herein. Counter-clockwise revolution of the shaft 53, bymeans of the cams I06 and I01, the arm I00, link H2, and arms H3 and H5,oscillates the printer shaft I I0 first clockwise and then back tonormal position to cause the printing mechanism to function.

Totalizer and printer actuating mechanism Fig. 12 illustrates thetotalizer and printer actuating mechanism for one denominational unit ofthe machine. As this mechanism is substantially duplicated in eachdenominational unit, it is felt that the description of the one unithere shown will be sufficient for the purpose of this specification.

An actuator leading frame H1 is formed by .means of two depending armssecured at opposite ends of the shaft I05 connected by a cross-bar orbail II8. Loose on the shaft I05 is a printer reducing segment H9, adownward extension of which is maintained in contact with the leadingframe hail IIO by a spring I20 stretch'ed between said reducing arm andsaid bail. The segment I I0 carries a stud I2I embraced bya verticalslot in an actuator rack I22 mounted for horizontal reciprocatingmovement by means of a grooved .rod I23 and a bar I24 cooperating withthe rearwardly disposed bifurcated end of said rack I22.

The rod in and the bar I24 are supported by the frames 40 and 4E. Therack I22 has a series of graduated steps I25 which cooperate withcorre-' ported by the shaft H0. Loosely connected to the arm I33 is ananti-rebound plate I 34 which cooperates with an anti-rebound pawl I35connectedby a spring I 30 to a printer yoke I31 loose on the shaft 0.The plate I34 has a plurality of projections, one of which cooperateswith a zero elimination pawl I30 pivoted on a rod supported by theprinter frame and having an armate tail I43 which cooperates with a studI44 in a forwardly extending arm of the segment I30. Each pawl I30 has abent-over lug. I45 which overlies its higher order neighbor. Anotherprojection of the plate I34 is engaged by a printer release trigger I40rotatably supported in the printer frame.

Depressing one of the amount keys I21 releases the zero stop pawl forits related rack I22 and moves the stud I25 of the depressed key intothe path of the corresponding step I25 on said rack I22. Initialmovement counter-clockwise of the shaft I05 and the leading frame II1,by means of the spring I20, moves the segment H9 and the rack I22 inunison therewith. Rearward movement of the rack I22 ishalted when thestep I25 engages the stud I20 of the depressed amount key; However, theleading frame II1 completes its cycle of movement, stretching the springI20. This positions the actuator rack commensurate with the value ofthedepressed key, and the segment H9, by means of the link I3I,positions the type carrier 44 accordingly. When the segment 9 moves awayfrom zero position, the stud I44, in cooperation with the arcuate tailI43, rocks the zero elimination pawl I30 counter-clockwise against thetension of a spring ill to allow printing movement of the plate I34, armI33, and type carrier 44. The pawl I30, by means of the overlying earI45, disengages all the lower order zero elimination pawls from theircorresponding plates I34, so that the zeros will print in the lowerdenomination. When the leading frame II1 reaches the terminus of itsinitial movement counter-clockwise, the printer releasetrigger I46 isrocked counter-clockwise, by mechanism not shown, to release the plateI34 and the arm I33 to the action of the spring I30, which has beenfurther tensioned by clockwise movement of the yoke I31. This causes thetype carriers 44 to engage the conventional inking ribbon and carry itinto contact with the record material carried by the platen roll 43 torecord the value of the depressed key.

After impression is completed, return movement clockwise of the leadingframe II1 returns the segment II9, the rack I22, and the type carrier 44to zero position, and return movement counter-clockwise of the yoke I31,by means of a rod I41 supported thereby, restores the plate I 34 and thearm I33 to zero position, as shown in Fig. 12.

Secured on the shaft 53 (Fig. 13) are companion cams I40 and I49cooperating respectively with rollers I50 and I5I carried by a cam armI52 flexibly connected by a spring I53 to the left arm of a two-armedaliner frame I54, both of said arms of said two-armed aliner frame I54being secured to a shaft I55 journaled in the frames 40 and H. After therack I22, the segment H9, and the type carrier 44 have been positionedin the manner explained above, the cams I40 and I 40 rock the frame I54clockwise to cause an alining barf I56 carried thereby to engage theproper tooth space in the segment II9 to position said segment and thetype carrier 44 during impression. Immediately after an imin thecustomary manner.

pression has been made, the aliner bar I56 is rocked out of engagementwith the segment ll 9.

Totalz'zers sponding wheel of the selected totalizer is rocked intoengagement with one of the two sets .of teeth carried by said rack," orone of two sets of teeth carried by an extension I39 of the rack 522.Return movement forwardly of the rack 522 rotates the wheel of theengaged totalizer commensurate with the value of the depressed amountkey to add this amount therein.

In subtracting operations, the corresponding wheel of the No. 1 orbalance totalizer isrocked into engagement with the rack E22 prior toits initial movement rearwardly, which movement rotates said wheelreversely to subtract the value of the depressed amount key therefrom.Each of the totalizer wheels carries a transfer cam M0, which, when atotalizer wheel passes through zero, engages and trips an add pawl lfllfor the next higher denomination, thereby causing one to be added insaid denomination. Likewise, in subtract operations, when a wheel of theNo. 1 totalizer is rotated reversely to zero, the transfer cam M0therefor engages and trips 2. subtract transfer pawl 842 to cause one tobe subtracted from the next higher denomination.

In total taking operations, the corresponding wheel of the selectedtotalizer is engaged with the rack i122 prior to its initial movementrearwardly, which movement rotates said wheel in a reverse directionuntil said wheel is stopped in zero position by one of the teeth of thetransfer cam M0 engaging the inner surface of its add transfer pawl MI.This positions the rack E22 and the type carrier 84 commensurate withthe amount on the totalizer wheel. The difierence between a read and areset total taking operation is that in read operations the wheel of theselected totalizer remains in engagement with the rack l22 during itsreturn movement forwardly and is therefore returned to its formerposition, and in reset operations the wheel of the selected totalizer isdisengaged from the rack 822 before said rack starts its return movementforwardly, thereby leaving said wheel standing at zero.

Rack retaining mechanism Mechanism is provided to take the strain off ofthe actuator racks in total taking operations due to the excessivetensioning of the springs 820 (Fig. 12) when said racks are stopped inone of their earlier positions by means of the transfer cams I 40 incooperation with the transfer pawls I when there is a small amount onthe totalizer. Thismechanism likewise insures that the racks arereturned fully to zero at the end of machine operation.

At the beginning of machine operation, the 1 rack retaining mechanism ismoved to iii effective position. After the leading frame I I! hascompleted its initial movement counter-clockwise and the rack I22 hasbeen positioned as explained above, the rack retaining mechanism ismoved to effective position to relieve the excessive a e'm'eo strain onthe rack and totalizer transfer mechanism during return movement of theleading frame H1. This mechanism will now be described in detail.

Referring to Fig. 12, each of the racks I22 has on the lower edgethereof a series of ratchet teeth i5! adapted to cooperate with springpawls i58 secured on a retaining pawl plate l5!) rotatably supported bytrunnions 860 in the frames ttland 4|. Secured to the plate I59 is a camarm .l6l with a roller H62 which is maintained in contact with theperiphery of a plate cam 563, secured on the main shaft 53 by a spring,shown in the parent case but not shown herein, which is tensioned tourge the plate H59 in a clockwise direction. I

At the beginning of machine operation the cam i163 rocks the plate 859counter-clockwise to disengage the pawls I58 from the ratchet teeth I51.

After the leading frame H'l'has completed its initial movementcounter-clockwise and the racks l22 have been positioned by means of thetrans fer cams 840 in cooperation with the transfer pawls Mi asexplained earlier herein for total taking operations, the cam Q63returns the plate 559 clockwise to reengage the pawls 558 with the teethl 51. The plate l59 remains in this position throughout the remainder ofmachine operation, return movement of the racks E22 causing the teethJ51 to ratchet over the pawls I58. This mechanism relieves the transfermechanism of the strain caused by the springs l2!) when the actuatorracks H22 are stopped early in their initial movement rearwardly; Thismechanism also insures that the racks are returned fully to zeroposition at the end of machine operation.

Totalizer selecting and controlling mechanism The adding functions ofthe diiferent totalizers are controlled by means of control elementslocated in columnar positions on the traveling carriage in cooperationwith hanging bar levers. The subtract function of the No. l or balancetotalizer is controlled either by control-elements on the travelingcarriage or by means of a Subtract control key. A Non-add" control keyis provided to prevent addition in any of the totalizers when it isdesired to record an amount or item without having said amount or itementered in a totalizer. The total taking functions of the presentmachine are controlled by means of Total and Sub-total control keys.Adding and subtracting operations may be repeated by means of a fRepeatcontrol key and an Error" key is provided to release depressed amountand control keys. I

Inasmuch as the totalizer selecting and controlling mechanism issubstantially duplicated for each totalizer, it is felt that theexplanation of this mechanism in connection with one totalizer will besuflicient. Due to the manner in which the mechanism is illustrated, thefunctioning of the controlling mechanism in adding and total takingoperations will be explained in connection with the lower rear or No. 4totalizer and in subtracting operations. the controlling mechanism willnecessarily be explained in connection with V the No. 1 or balancetotalizer.

Overdraft mechanism Overdraft key is unlocked and the N0. 1 "Total keyis simultaneously locked against depression The locking of the No. 1"Total key notifies the operator that the balance totalizer is in anoverdrawn condition. At this time, the operator may pursue either of twocourses. The No. 1 Total key may be manually unlocked and the balanceoperation continued, or the Overdraft key may be depressed to releasethe machine for an overdraft operation in which the complementary amountof the overdraft is transposed to a true negative amount and recorded.The overdraft mechanism used in the machine of this invention isbasically the same as that illustrated and described in co-pendingapplication for United States Letters Patent of Charles L. Lee, filedApril 14, 1932, Serial No. 605,160, which issued on May 4, 1937, aspatent No. 2,079,355. However, installation of the rotary drive shaftnecessitated numerous changes in the overdraft mechanism in order toadapt it for use in the present machine. Therefore all the new mechanismand all the mechanism affected by the installation of the rotary driveshaft will now be described in detail and description of the overdraftmechanism not explained herein may be had by referring to the patentmentioned above.

Directing attention to Figs. 1, 2, 3, and 5, the "Overdraft key 408 iscomposed of two parts, an upperp-art or stem 409 and a lower part orpitman 410. The stem 409 is slidably mounted by means of the upper endthereof, which extends through an opening in the auxiliary keyboardplate 90 and a slot in the lower end which fits loosely over a stud 4Ilsecured in the frame 40. The pitman M is mounted to slide in harmonywith the stem 409 by means of slots in said pitman in cooperation withthe stud 4H and a stud 4I2 carried by an auxiliary plate 4I3 secured tothe frame 40. The stem 409 is normally connected to the pitman 410 bymeans of a latch 4I4 pivotally connected to said stem and having an earwhich is urged into engagement with a notch-in said pitman by means of aspring 4l6 which also urges the stem upwardly to normally maintain ashoulder thereof in contact with the lower surface of the plate 90. Incase the overdraft key is'inadvertently retained depressed at the endofan overdraft operation, mechanism presently to be described rocks thelatch 4l4 counterclockwise to disengage the ear 5 from the pitman 4 I 0to allow said pitman to return to normal position independently of thestem 409.

A spring 1 urges the pitman 4l0 upwardly to normally maintain,- anupward extension 4l8 thereof in contact with the lowersurface of theplate 90. A link M9 is connected at its upper end to the pitman 410 andis slotted at its lower end to receive the stud in the releasing lever66.

When the No. 1 totalizer is not overdrawn, the overdraft key 408 islocked against depression. This is accomplished by means of a latch 420(Figs. 8 and 9) loose on the stud 4| 1, said lat'ch having a notch in anupward extension thereof, which, in cooperation with a bent-overextension 421 of the pitman 4l0, block s downward movement of saidpitman. The latch 420 is connected by a link 422 to an arm 423 securedto an over-.

which the overdraft shaft is restored counterclockwise to normalposition will be explained later herein.

The overdraft shaft 424 (Figs. 16 and 18) has secured to its left end anarm 425 connected by a link 426 to pitman 421 which is in turn connectedto the upper end of a latch 428 loose on a stud 429 in the frame 4|.Movement imparted to -the. shaft 424, which is clockwise as viewed inFig.

8 and counterclockwise as' viewed in Figs. 16 and 18, by means of thearm 425, link 426, and pitman 421, rocks the latch 428 counterclockwiseto cause a bent-over ear thereof to enter a notch in the stem of the No.1 Total key to lock said key against depression when the balancetotalizer is overdrawn.

The functioning of the balance totalizer and of the auxiliarydifferential is controlled in overdraft operations by means ofa clusterof cams driven by means of a pinion 430 (Figs. 1, 2, and 5) secured tothe shaft 53 and connected by a pinion 431 rotatably mounted on theplate 413 to an overdraft drive gear 432 loose on the stud 61 in theframe 40. The ratio between the gear 432 and the pinion 430 is such thatone revolution of the shaft 53 in a counter-clockwise direction rotatesthe gear 432 one-third of a counterclockwise revolution. Secured to thegear 432 is a collar 434 (Figs. 5 and 7) with three equally spacednotches adapted to cooperate with the tooth 435 of a pawl 436 pivotallyconnected to a disk 431 assembled with a plurality of overdraft controlcams which form a cluster 438 rotatabiy supported by the stud 61. It istherefore obvious that in overdraft operations which consist of threecycles of movement of the machine, operating mechanism, the gear 432will make one counter-clockwise revolution. The disk 431 and itsassociated cams are assisted to and maintained in home position by meansof a lever 439 (Fig. 1) pivoted on the rod I23 and carrying a roller 440which is urged into cooperation with a V-notch in the disk 431 by aspring 44I.

When the Overdraft key 408 (Fig. 5) is in undepressed position, acamming surface on a projection 442 of the pitman 410 engages a tail 443of the pawl 436 to maintain said pawl disengaged. from the notches inthe collar 434. Consequently, during regular machine operations the gear432 and collar 434 rotate idly without imparting any movement to the camcluster 438. Depressing the Overdraft key allows a spring 444, assistedby an angular extension 445 of the pitman M0, to rotate the pawl 436counter-clockwise to engage its tooth 435 with one of the notches in thecollar 434. Also, depression of the Overdraft key, by means of the link419 (Fig. 3), rotates the release lever 66 to release the machine foroperation in the manner previously explained.

' In order to insure that the machine operates through three cycles inoverdraft operations, the Overdraft key is retained depressed by lockingmechanism presently to be described, and a finger 450 of the link 4l 9moves in the path of an abrupt surface 446 of the non-repeat latch 81 toprevent the functioning of said latch while the overdraft key isdepressed.

Mechanism for locking the Overdraft key depressed consists of a latch441 (Figs. 8 and 9) [loose on the stud 4H and having a stud 460 to whichis connected one end of a link 448. The

other end of the link 448 is connected to a .bell crank 449 loose on arod I23, which also rotatably supports the lever 439 (Fig. 1). The bellcrank 449 carries a roller 45! adapted to cooperate with the peripheryof a cam 452 which is a part of the cluster 438. A spring 453 urges thebell crank 449 clockwise, which, by means of the link 448, also urgesthe latch 441 clockwise to maintain a projection 454 thereof in contactwith the inner surface of the extension 428 of the pitman 4). Depressionof the Overdraft key 408 allows the latch 441 to hook over the top edgeof the extension 42! to lock said Overdraft operations. Near the end ofan overdraft operation a node 455 of the cam 452, in cooperation withthe roller 45l, rocks the bell crank 448 I counter-clockwise todisengage the latch 441 from the extension 42l to allow the overdraftkey to be restored upwardly by the spring 411 pendently of said stem,as'previouslyexplained.

it will be recalled, by referring to Fig. 8, that an overdraft causesthe overdraft shaft 424 to receive clockwise movement to unlock theOverdraft key. The manner in which the overdraft shaft is restored tonormal position and the latch 326' is returned to locking position willnow be described.

Iurnably mounted on the latch 420 (Fig. 9) is a pawl 356 with a tooth451 urged clockwise into communication with asimilar tooth 458 on thelatch 44?, by a spring 459. Counter-clockwise releasing movement of thelatch 441 causes the tooth 458 to move beyond the tooth 451; there fore,when the spring 453 (Fig. 8) returns the bell crank 449 and the latch441 clockwise, the latch 426, by means of the pawl 456, moves in unisonwith said latch and, by means of the link 322 and arm 423, restores theoverdraft shaft 424counter-clockwise to normal position. The pawl 456remains engaged with the tooth 458 until in a subsequent operationupward movement of the arm H2 (Figs. 8, 9, and 11) causes a stud 363therein to engage a tall 464 of the pawl 656 to disengage said pawl fromthe tooth 458, leaving said parts in their normal positions, as shown inFig. 9.

As previously stated, it is necessary to disable'the printing mechanismduring the first two cycles of overdraft operations in order to preventcomplementary overdraft entries from being made upon the record.material. The mechanism for accomplishing this result is shown in Figs.8 and 11 and will now be described.

A link 465, the forward end of which is loose on the stud 463, connectsthe link 2 to an upward extension of a lever 466 loose on the rod B23.The lever 466 carries rollers 461 and 468 which cooperate respectivelywith companion cams 469 and 410 which form an integral part of theassembly 438 (see also Figs. and 7). At the beginning of an overdraftoperation, the

cams 468 and, 418 rock the lever 466 counterclockwise, which, by meansof the link 465, moves the link H2 clockwise to disengage the notchtherein from the stud HI in the cam lever ll6 and to en age anothernotch "I in said link with a stat onary stud 412 to secure the printingmechanismin ineffective or home position during the first and secondcycles of an overdraft operation. At thebeginning of the third cycle ofan key depressed during overdraftoverdraft operation, the cams 469 and410 return the lever 466 clockwise to reengage the link H2 with the studHI so that the printing mechanismwill function to print the truenegative amount of the overdraft.

Auxiliary difierential As previously stated, the machine'of thisinvention has an auxiliary differential into which the complementaryoverdraft is temporarily transferred when the balance totalizer iscleared in the first cycle of an overdraft operation. In the secondcycle of an overdraft operation, the cleared balance totalizer isselected for a subtract operation and the wheels of the auxiliarydifferentialcontrol the movement of the actuator racks 922 (Fig. 12) intheir initial movement rearwardly, consequently the complementary amountof the overdraft is subtracted from the cleared No. l or balancetotalizer. It is obvious that this results in the true negative amountof the overdraft being stored in the No. 1' totalizer.

loosely mounted on the rod I23. Each of the arms 4776 carries a roller411 embraced by camming slots in two symmetrical arms 418 secured atopposite ends of the engaging shaft 63 journaled in the frames 40 and 4LSecured on the righthand end of the shaft 63 is a crank 48!) with aroller 48! adapted to cooperate with the periphcry of a plate cam 482which forms an integral part of the cluster 438, which, as previouslystated, makes one counter-clockwise revolution each overdraft operation.Springs 483 com nected to the arms 411 urge said arms and the shaft 63clockwise to maintain the roller 48l in I contact with the periphery ofthe cam 482.

' Before explaining the manner in which the auxiliary differentialfunctions, it will probably be advantageous to describe the mechanismwhich controls the functioning of the balance totalizer in overdraftoperations.

Control of the balance totalizer in overdraft operations Mechanism tocontrol the functioning of the balance totalizer during overdraftoperations will now be described.

Loose on the rod m (Fig. is a bell crank 484 with a roller 485 which isurged by a spring 481 into communication with the periphery of a cam 486assembled with the cluster 438. The bell crank 484 is connected by alink 488 to a crank 489 secured on the righthand end of a control shaft493 joumaled in the frames 46 and 4|. Secured on the lef thand-end ofthe shaft 483 (Figs. 10, 17, and 18) is an arm 484 with a stud 485embraced by the bifurcated end of a link 496, the rearward end of whichis connected to a downward extension on theNo. 1 control lever 368. Thestud.495 (see also Fig. 16) is embraced by the hook-shaped forwardend ofa subtract control link 481,"the rearward end of which'is con- No. 2 addcontrol arm 499 which controls the adding function of the No. 2totalizer in exactly the same manner as the arm I86 (Fig. 16) controlsthis function in the No. 4 totalizer.

In the beginning of the first cycle of an overdraft operation,counter-clockwise movement of the cam 486 (Fig. 10) allows the spring481 to rock the bell crank 484 clockwise, which, by means of the link488, rocks the shaft 493 and the arm 494 also clockwise as hereviewed'and counter-clockwise as viewed in Figs. 16, 1'7, and 18. Thismovement of the arm 494, by means of the link 496, rocks the lever 369clockwise as viewed in Fig. 17 to move the pitman 322 (Fig. 18) upwardlyinto engagement with the stud'346 in the engaging plate 338 to engagethe No. 1 totalizer for a clearing operation in exactly the same manneras explained for the No. 4 totalizer,

Clockwise movement of the engaging plate 338 engages the wheels of theNo. 1 totalizer with the actuator racks I22 (Fig. 12) prior to theirinitial movement rearwardly. Initial movement of the racks I2 rotatesthe No. 1 totalizer wheels reversely to zero to position said actuatorrack commensurate with the amount thereon. Upon completion of therearward movement of the racks I22, the wheels 413 of the auxiliarydifferential 415 are moved into engagement with their correspondingauxiliary racks 414. This is accomplished by means of the cam 482 (Figs.14 and 15), counter-clockwise movement of which, in cooperation with theroller 48I, rocks the arm 488, shaft 63, and engaging arm 418counterclockwise. The configuration of the cam slots in the arms 418, incooperation with the rollers 411, rocks the auxiliary differentialupwardly or counter-clockwise to engage the wheels 413 with theauxiliary racks 414. The wheels of the auxilia'ry differential havepositive stops which locate them in zero position, and these wheels arealways standing at zero prior to their engagement with the auxiliaryracks 414. After the wheels of the No. 1 or balance totalizer have beenturned to zero by initial movement of the racks I22, return movement ofthe plate 338 disengages said totalizer wheels from'said actuator racks.Return movement forwardly of the racks I22 in the latter part of thefirst cycle of an overdraft operation rotates the auxiliary differentialwheels 413 to transfer the complementary amount of the overdraft fromthe No. l totalizer to the auxiliary differential.

Due to the fact that the detent 358 (Fig. 1'1) and the No. 1 Total keyreceive no movement in overdraft operations, it is necessary to employ alink 590 loose on the stud 359 in the lever 368 and bifurcated toreceive the stud 389 in the bell crank 393 so that clockwise movement ofthe lever 369 will be transmitted to the bell crank 393 to move the stud395 into the path of the lever 499 to cause any depressed amount keys tobe released at the beginning of an overdraft operation. Further detailsof the releasing mechanism may be found in the parent case.

By observing Fig. 10 it will be understood that the shaft 493 andassociated parts have three positions, a neutral or home position inwhich said parts are here shown, a rearward or clockwise position toselect the balance totalizer for clearing operations, and a forward orcounter-clockwise position to which a raised portion 58I of the cam 486rocks said parts in the beginning of the second cycle of an overdraftoperation. This shifts the links 491 and 498 forwardly (Figs. 16 and 18)to rock the subtract control arm "I for the. balance totalizer and theadd control arm 499 for the No. 2 totalizer to respectively select saidtotalizers for'subtract and adding opera-' tions.

In the second cycle of an overdraft operation, initial movementrearwardly of the actuator racks I22 rotates the wheels of the auxiliarydifferential, which are still engaged with the auxiliary racks 414, backto zero position. It is apparent that at this time the auxiliarydifferential controls the positioning of the actuator racks I22.

Therefore, the complementary amount of the overdraft which was stored inthe auxiliary dif are now standing at zero, are disengaged therefrom. I

It is to be understood that the adding of the complementary amount ofthe overdraft during the second cycle of an overdraft operation is notlimited to the No. 2 totalizer, but this amount may be added into anyone or as many of the totalizers as desired. This may be accomplished byconnecting the link 498 (Fig. 18) to the desired add control 'arm orarms.

A link 58I (Figs. 10 and 16) is hook-shaped on both ends to fit over astud 582 in the arm I 494 and the stud 389 in the bell crank 393. Thislink provides a means of transmitting the clockwise movement of the arm494 as observed in Fig. 16 to the bell crank 393 to cause any depressedamount key to be released at the beginning of the second cycleof anoverdraft operation.

In the third cycle of an overdraft operation the cam 486 (Fig. 10) againselects the No. 1 or. balance totalizer fora clearing operation. It willbe recalled that the mechanism illustrated in Fig. 11 connects theprinter actuating mechanism to its operating lever I III at thebeginning of the third cycle of operation. Therefore, in this final.cycle of an overdraft operation, the No. 1 or balance totalizer iscleared and the true negative amount of the overdraft is printed uponthe record material.

It is felt that a clear understanding of the operation of the machinewill have been obtained from the preceding specification, and for thisreason no description of operation in connection with a particularbusiness system has been included herein. However, the machine of thepresent invention is very flexible in nature and may,

with minor adjustments and changes, be adapted for use in the majorityof present-day businesses.

While the form of mechanism herein shown and described is admirablyadapted to fulfill the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one form orembodiment herein disclosed, for it is susceptible of embodiment invarious forms, all coming within the scope of the claims which follow.

What is claimed is:

l. Ina machine of the class described, adapted to perform regular andoverdraft operations, the combination of an overdraft control membercomprising two elements adapted to move in unison to release the machinefor an overdraft operation;

a latch connecting the elements; means to retain 15 the control memberin moved position during overdraft operations; means to release theretaining means near the end of an overdraft operation; and meanswhereby the releasing means disengages the latch when one of theelements is retained in moved position to allow the-other element to berestored to normal position.

2. In a machine of the class described adapted to perform regular andoverdraft operations, the combination of an overdraft control member; aseparate fingerpiece for the member; a latch to normally connect theflngerpiece to the member; means to retain the control member in movedposition during overdraft operations; and means to release the retainingmeans near the end of an overdraft operation, said releasing means incooperation with the retaining means also adapt? ed to disengage thelatch when the fingerpieoe is held down to allow the control member toreturn to normal position.

3. In a machine operable to perform plural cycle overdraft operations,the combination of 'an overdraft key; a cycle controller operable to;control the operationof the machine in overdraft operations; a gearoperable to make a complete rotation during the plural cycles of anoverdraft operation; and clutch mechanism rendered operable by saidoverdraft key each time the key is operated, for coupling the cyclecontroller to the gear for operation thereby.

,4. In a machine of the class described having totalizeis, totalizerengaging mechanism, diiTerential mechanism, storage devices, andprinting mechanism, the combination of a rotatable main shaft havingmeans thereon to operate the totalizer engaging means, the difierentialmechanism,

and the printing means; a cycle control mechanism operable toselectively control the operation of the totalizer, printing means, andstorage dearemeo vices during a plurality of cycles of an overdraftoperation; means for driving the cycle controller including a gearoperable to make one complete rotation during the plural cycles of anoverdraft position and a gear on the rotatable main drive shaft fordriving the first mentioned gear; and means for rotating the main driveshaft.

5. In a machine of the class described operable in single cycleoperations and plural cycle overdraft operations and having a totalizer,totalizer engaging mechanism, differential mechanism, a storage device,and printing mechanism, the combination of a rotary drive shaft havingmeans thereon to operate the totalizer engaging means, the differentialmeans, and the printing means; controlmechanism operable to selectivelycontrol the operation of the totalizer engaging means, the

printing means, and the storage device in true negative total printingoperations; and means on the rotary drive shaft for operating thecontrol mechanism in true negative total operations.

6. In a machine of the class described, a rotatable drive shaft; acontrol means operable during three cycles in overdraft operations;means for driving the control means including a gear on the drive shaftand a second gear meshing therewith operable one third of a revolutionfor each rotation of the first gear; a disk fast to the second gear andhaving three equispaced notches in its periphery; a pawl pivoted on thecontrol means and operable to engage the notches in the disk to connectthe control means to the second gear for operation thereby; and anoverdraft key for controlling the operationof the pawl.

LEEFE JANE LEE, Executria' of the Estate of Charles L. Lee, De-

ceased.

